Specification Brand : uxcell BulletPoint1 : Product Name : CopperWasher;Total Size : 30 x 38 x 2mm/1.2" x 1.5" x 0.08"(InnerDia*OD*T) BulletPoint2 : Material : Copper BulletPoint3 : Color : Copper Tone BulletPoint4 : Net Weight : 7g BulletPoint5 : Package Content : 1 x Copper Washer ExteriorFinish : Copper ExternallyAssignedProductIdentifier1 : 709874082562 ExternallyAssignedProductIdentifier2 : 0709874082562 ItemName : uxcell 30mm Inner Dia 38mm OD Copper Washer Flat Gaskets Seal Fasteners ItemPackageDimensions_Height : 0.39 inches ItemPackageDimensions_Length : 5.51 inches ItemPackageDimensions_Width : 3.94 inches ItemPackageQuantity : 1 ItemTypeKeyword : mechanical-control-cable-accessories Manufacturer : uxcell Material : Copper MetalType : Copper ModelNumber : US-SA-AJD-78036 NumberOfItems : 1 NumberOfPieces : 1 PartNumber : a14122500ux0567 ProductDescription : Washers made from copper are often used within piping, electronics, household products, and biomedical applications as copper is malleable and ductile– a biostatic surface that is a good conductor of heat and, when very pure, a good conductor of electricity. Copper Provides a Tighter Seal and Greater Heat Endurance than Steel and Rubber Washers.